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Investments (Tables) | 12 Months Ended
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Dec. 31, 2014
Investments [Abstract] |
Gains And Losses Due To Changes In Fair Value | The following table presents gains (losses) due to changes in fair value of investments that are measured at fair value pursuant to application of the fair value option:
| Year Ended December 31,
| 2014 |  | 2013 |  | 2012
| (Amounts in thousands)
Fixed maturity securities | $ | 77,208 |  |  | $ | (100,703 | ) |  | $ | 36,317 |
Equity securities | (32,922 | ) |  | 56,822 |  |  | 9,158 |
Short-term investments | (527 | ) |  | (156 | ) |  | 34 |
Total | $ | 43,759 |  |  | $ | (44,037 | ) |  | $ | 45,509 |
Net Realized Investment Gains | A summary of net realized investment gains (losses) is as follows:
| Year Ended December 31,
| 2014 |  | 2013 |  | 2012
| (Amounts in thousands)
Net realized gains (losses) from investments and other assets and liabilities: |  |  |  |  |
Fixed maturity securities | $ | 74,489 |  |  | $ | (95,225 | ) |  | $ | 47,707 |
Equity securities | 8,715 |  |  | 80,910 |  |  | 16,679 |
Short-term investments | (2,470 | ) |  | (1,059 | ) |  | (686 | )
Total return swap | (2,969 | ) |  | 2,176 |  |  | 0 |
Options | 3,419 |  |  | 1,776 |  |  | 2,680 |
Total | $ | 81,184 |  |  | $ | (11,422 | ) |  | $ | 66,380 |
Gross Gains And Losses Realized On Sales Of Investments | Gross gains and losses realized on the sales of investments, excluding options, are shown below:
| Year Ended December 31,
| 2014 |  | 2013 |  | 2012
| (Amounts in thousands)
| Gross Realized Gains |  | Gross Realized Losses |  | Net |  | Gross Realized Gains |  | Gross Realized Losses |  | Net |  | Gross Realized Gains |  | Gross Realized Losses |  | Net
Fixed maturity securities | $ | 7,015 |  |  | $ | (9,734 | ) |  | $ | (2,719 | ) |  | $ | 9,320 |  |  | $ | (3,842 | ) |  | $ | 5,478 |  |  | $ | 11,473 |  |  | $ | (83 | ) |  | $ | 11,390 |
Equity securities | 59,342 |  |  | (17,705 | ) |  | 41,637 |  |  | 82,385 |  |  | (58,297 | ) |  | 24,088 |  |  | 19,538 |  |  | (12,017 | ) |  | 7,521 |
Short-term investments | 0 |  |  | (1,943 | ) |  | (1,943 | ) |  | 0 |  |  | (903 | ) |  | (903 | ) |  | 2 |  |  | (722 | ) |  | (720 | )
Estimated Fair Values Of Investments | The estimated fair values at December 31, 2014 by contractual maturity are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
| Estimated Fair Value
| (Amounts in thousands)
Fixed maturity securities: |
Due in one year or less | $ | 42,637 |
Due after one year through five years | 355,106 |
Due after five years through ten years | 593,934 |
Due after ten years | 1,626,723 |
Total | $ | 2,618,400 |
Investment Income | A summary of net investment income is shown in the following table:
| Year Ended December 31,
| 2014 |  | 2013 |  | 2012
| (Amounts in thousands)
Fixed maturity securities | $ | 104,946 |  |  | $ | 107,926 |  |  | $ | 117,557 |
Equity securities | 17,313 |  |  | 18,249 |  |  | 15,831 |
Short-term investments | 8,561 |  |  | 2,702 |  |  | 2,073 |
Total investment income | $ | 130,820 |  |  | $ | 128,877 |  |  | $ | 135,461 |
Less: investment expense | (5,097 | ) |  | (4,339 | ) |  | (3,565 | )
Net investment income | $ | 125,723 |  |  | $ | 124,538 |  |  | $ | 131,896 |

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- Definition Tabular disclosure of the realized and unrealized gains and losses reported in the statement of income which have resulted from the sale and holding of marketable securities, respectively, as well as the sale or disposal of cost method investments. Such amounts would include realized gains and losses on the sale or disposal of trading, available-for-sale, and held-to-maturity securities, unrealized gains and losses on trading securities, unrealized gains and losses on available-for-sale and held-to-maturity securities transferred to the trading securities category, realized gains and losses on the sale or disposal of cost method investments, and losses recognized for other than temporary impairments (OTTI) of such investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.M) -URI http://asc.fasb.org/extlink&oid=27011274&loc=d3e87990-122713 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27405-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (c)-(e) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section M + Details
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